Some time we need to get valid commit without a ref but with proper
tree-ish, now we can't do that.
This patch allow upload-archive's to use reachability checking
rather than checking that is a ref. This means a remote client can
fetch a tip of any valid sha1 or tree-ish.
---
archive.c | 24 +++++++++++++-----------
t/t5000-tar-tree.sh | 2 ++
2 files changed, 15 insertions(+), 11 deletions(-)
diff --git a/archive.c b/archive.c
index 93e00bb..0a48985 100644
--- a/archive.c
+++ b/archive.c
@@ -5,6 +5,7 @@
#include "archive.h"
#include "parse-options.h"
#include "unpack-trees.h"
+#include "refs.h"
static char const * const archive_usage[] = {
N_("git archive [options] <tree-ish> [<path>...]"),
@@ -241,6 +242,13 @@ static void parse_pathspec_arg(const char **pathspec,
}
}
+static int check_reachable(const char *refname, const unsigned char *sha1,
+ int flag, void *cb_data)
+{
+
+ return in_merge_bases(cb_data, lookup_commit_reference_gently(sha1, 1));
+}
+
static void parse_treeish_arg(const char **argv,
struct archiver_args *ar_args, const char *prefix,
int remote)
@@ -252,22 +260,16 @@ static void parse_treeish_arg(const char **argv,
const struct commit *commit;
unsigned char sha1[20];
- /* Remotes are only allowed to fetch actual refs */
- if (remote) {
- char *ref = NULL;
- const char *colon = strchr(name, ':');
- int refnamelen = colon ? colon - name : strlen(name);
-
- if (!dwim_ref(name, refnamelen, sha1, &ref))
- die("no such ref: %.*s", refnamelen, name);
- free(ref);
- }
-
if (get_sha1(name, sha1))
die("Not a valid object name");
commit = lookup_commit_reference_gently(sha1, 1);
if (commit) {
+
+ /* Remotes are only allowed to fetch actual objects */
+ if (remote && !for_each_ref(check_reachable, (void *)commit))
+ die("Not a valid object name");
+
commit_sha1 = commit->object.sha1;
archive_time = commit->date;
} else {
diff --git a/t/t5000-tar-tree.sh b/t/t5000-tar-tree.sh
index e7c240f..fc35406 100755
--- a/t/t5000-tar-tree.sh
+++ b/t/t5000-tar-tree.sh
@@ -194,6 +194,8 @@ test_expect_success 'clients cannot access unreachable commits' '
sha1=`git rev-parse HEAD` &&
git reset --hard HEAD^ &&
git archive $sha1 >remote.tar &&
+ git archive --remote=. $sha1 >remote.tar &&
+ git tag -d unreachable &&
test_must_fail git archive --remote=. $sha1 >remote.tar
'
--
1.8.1.4
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